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Proceedings Paper

Experimental investigations of the laser cladding of protective coatings on preheated base material
Author(s): Rafal Jendrzejewski; Gerard Sliwinski; Ana Conde; Carmen Navas; Juan J. de Damborenea
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Paper Abstract

The laser cladding technique was applied to obtain Co-based stellite SF6 coatings on the chromium steel base. The coatings were prepared by means of a direct cladding of metal powder using a 1.2 kW cw CO2 laser stand with a controlled preheating of the substrate material. Results of the metallographic tests revealed a fine-grained, dendritic microstructure and proper metallic bonding between substrate and coating. A nearly constant concentration of mian elements at different areas of the coating cross-section indicated on homogeneous chemical composition of the laser-cladded SF6 alloy samples. A significant decrease of the micro-crack number with increasing temperature of the base preheating was observed. This was accompanied by a drop of the wear and corrosion resistance.

Paper Details

Date Published: 21 June 2004
PDF: 6 pages
Proc. SPIE 5449, Eighth International Conference on Laser and Laser Information Technologies, (21 June 2004); doi: 10.1117/12.563217
Show Author Affiliations
Rafal Jendrzejewski, Institute of Fluid-Flow Machinery (Poland)
Gerard Sliwinski, Institute of Fluid-Flow Machinery (Poland)
Ana Conde, Ctr. Nacional de Investigaciones Metalurgicas (Spain)
Carmen Navas, Ctr. Nacional de Investigaciones Metalurgicas (Spain)
Juan J. de Damborenea, Ctr. Nacional de Investigaciones Metalurgicas (Spain)


Published in SPIE Proceedings Vol. 5449:
Eighth International Conference on Laser and Laser Information Technologies
Vladislav Ya. Panchenko; Nikola V. Sabotinov, Editor(s)

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